Eighteen years of age is when the training wheels of life really start to come off. Of course, it depends on your personal situation, but for the first time, you really get the chance to start making your own decisions. Many of us will be fortunate enough to still have the guidance of our parents, mentors, and guardians once we reach this age to hopefully prevent us from making life-altering mistakes that could dictate the rest of our adult lives. But, inevitably, mistakes will happen—we're all…